FORESTIST
Original Article

Distribution, biology, morphology and damage of Cinara cedri Mimeur, 1936 (Hemiptera: Aphididae) in the Isparta Regional Forest Directorate

1.

Department of Forest Engineering, Süleyman Demirel University, Faculty of Forestry, Isparta, Turkey

FORESTIST 2019; 69: 1-10
DOI: 10.26650/forestist.2019.346284
Read: 164 Downloads: 45 Published: 01 January 2019

In 2015-2016, a study was performedexamining the distribution, colony dispersion in tree canopies, occurrence ratein shoots at different ages, morphology, and the damage of the cedar aphid(Cinara cedri Mimeur 1936) (Hemiptera: Aphididae) This study was completedalongside biological observations in the Isparta Regional Forest Directorate.This study was conducted across 46 sites at an elevation of 820-1738 meter (m)and the distribution of this species was determined by a survey. Compared toother sites, the Cinara cedri (C. cedri) population was found to be higher in10 sites with young stands with an average height of 1000-1200 m. These siteswere established through plantation. Colonies were typically observed on theshoots from the previous year and on branch axils. They were found to feed onshoot tips and trunks of young trees and preferred shoots with a diameter of1.0-1.5 centimeter (cm) on the southern and eastern aspects of the trees. Itwas observed that C. cedri mostly fed on shoots of the previous year, whichcaused the needles to dry and turn red. Damage was observed especially on youngtrees from which the dried needles fell and defoliation was concentratedparticularly on the shoot tips and tops of the trees. It was found thathoneydew was secreted by those insects fed with sap, and this secretion thencovered the needles, shoots and branches, resulting in fumagine. Thepopulations overwintered as eggs and then nymphs hatched during the first weekof April. The adult stage was reached after completing four nymph periods overa time span of between one week and 10 days. These adults then reproducedparthenogenetically, with winged viviparous individuals appearing between Mayand June, and oviparous emerging in October. The final stage of the cycle was aperiod of mating and then egg-laying.

Cite this paper as: Oğuzoğlu, Ş., Avcı, M., 2019. Distribution, biology, morphology and damage of Cinara cedri Mimeur, 1936 (Hemiptera: Aphididae) in the Isparta Regional Forest Directo

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